/Engine/Plugins/FX/Niagara/Source/Niagara/Public/NiagaraScriptExecutionParameterStore.h
Storage class containing actual runtime buffers to be used by the VM and the GPU. Is not the actual source for any parameter data, rather just the final place it's gathered from various other places ready for execution.
[USTRUCT](Programming/UnrealArchitecture/Reference/Structs)() struct FNiagaraScriptExecutionParameterStore : public [FNiagaraParameterStore](API\Plugins\Niagara\FNiagaraParameterStore)
uint8:  1
bInitialized
TArray< uint8 >
CachedScriptLiterals
uint32
PaddedParameterSize
TArray<FNiagar...
PaddingInfo
int32
ParameterSize
Size of the parameter data not including prev frame values or internal constants.